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Finding the Fourth Proportional to 127,966.74, 176,607.81 and 71,397.78

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Solution

The fourth proportional to 127,966.74, 176,607.81 and 71,397.78 is: 98,536.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,966.74 : 176,607.81 = 71,397.78 : x
  2. Step 2: Convert to fraction form
    127,966.74/176,607.81 = 71,397.78/x
  3. Step 3: Cross multiply
    127,966.74x = 176,607.81 × 71,397.78
  4. Step 4: Simplify right side
    127,966.74x = 12,609,405,564.66
  5. Step 5: Solve for x
    x = 12,609,405,564.66/127,966.74
  6. Step 6: Final answer
    x = 98,536.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.